Continuous-variable assisted thermal quantum simulation
- URL: http://arxiv.org/abs/2006.00471v1
- Date: Sun, 31 May 2020 09:04:02 GMT
- Title: Continuous-variable assisted thermal quantum simulation
- Authors: Dan-Bo Zhang, Guo-Qing Zhang, Zheng-Yuan Xue, Shi-Liang Zhu, Z. D.
Wang
- Abstract summary: We present an experimentally feasible quantum algorithm assisted with continuous-variable simulating for quantum systems at finite temperatures.
It is found that the important crossover phase diagram of the Kitaev ring can be accurately simulated by a quantum computer with only a few qubits.
We propose a protocol implementable with superconducting or trapped ion quantum computers.
- Score: 1.6530012863603747
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Simulation of a quantum many-body system at finite temperatures is crucially
important but quite challenging. Here we present an experimentally feasible
quantum algorithm assisted with continuous-variable for simulating quantum
systems at finite temperatures. Our algorithm has a time complexity scaling
polynomially with the inverse temperature and the desired accuracy. We
demonstrate the quantum algorithm by simulating finite temperature phase
diagram of the Kitaev model. It is found that the important crossover phase
diagram of the Kitaev ring can be accurately simulated by a quantum computer
with only a few qubits and thus the algorithm may be readily implemented on
current quantum processors. We further propose a protocol implementable with
superconducting or trapped ion quantum computers.
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